[plan9] build failure in sexp.c

[sitmsiteman]

term% mk
6c -p -Iinclude -DPLAN9 '-DSEXP_USE_GREEN_THREADS=0' -D__amd64 sexp.c
/usr/glenda/git/chibi-scheme/sexp.c:3177[sexp.c:11149] initializer is not a constant: sexp_quarters
/usr/glenda/git/chibi-scheme/sexp.c:3177[sexp.c:11149] initializer is not a constant: sexp_quarters
/usr/glenda/git/chibi-scheme/sexp.c:3177[sexp.c:11149] initializer is not a constant: sexp_quarters
/usr/glenda/git/chibi-scheme/sexp.c:3177[sexp.c:11149] initializer is not a constant: sexp_quarters
mk: 6c -p -Iinclude ...  : exit status=6c 4297: error

The fix 9d6af60 throws compile errors because NaN() and Inf(1) are both function calls.

[ashinn]

Sorry, I don't have a plan9 build handy for easy checking at the moment, if you could prepare a patch it would help.